NONSYLLABIC Scrabble 18 Words With Friends 23 Definition adjective not forming a syllable or the nucleus of a syllable. — synonyms: unsyllabic adjective (of speech sounds) not forming or capable of forming the nucleus of a syllable. See all 407 words you can make from NONSYLLABIC → 11-letter words Words starting with N Words ending with C ← Unscramble different letters